Cometic Polaris RZR XP 4 Turbo Complete Gasket Kit (C3826) by Cometic

When you have the engine apart, the gaskets are not the place to cut corners. The Cometic Polaris Complete Gasket Kit (C3826) is a complete engine gasket kit that covers both the top end and the bottom end, with Cometic’s premium materials and precise fit.

Witchdoctors stocks genuine Cometic gaskets by their Cometic part numbers. Match your part number, check the fitment below and order with confidence.

Why Choose the Cometic Polaris Complete Gasket Kit

For a full engine rebuild, a complete kit is the simplest, most cost-effective way to get every gasket and seal at once.

Key Features and Benefits

• Covers top end and bottom end gaskets
• One part number for a full rebuild
• Made in the USA

Specifications

• Brand: Cometic Gasket
• Part number: C3826
• Product type: complete gasket kit
• Made in: USA
• Quantity: 1 kit

Cometic Gasket Technology

Application-specific materials

Cometic chooses materials and construction for each application, using MLS steel, AFM, fiber and premium elastomer seals where each one works best, so every joint seals the way the engine designer intended.

Every Cometic gasket is engineered and manufactured in the USA, and the company supplies professional engine builders in powersports, motorsport and performance automotive.

Fitment and Compatibility

Published listings show part C3826 for: Polaris 2018-2021 RZR XP 4 Turbo.

Fitment is listed by part number. Always compare the Cometic part number with your current gasket, your service manual or your parts supplier’s lookup, especially on engines that have been modified.

Why Gaskets and Seals Fail

Every gasket lives a hard life. Heat cycles expand and contract the metal around it thousands of times. Vibration works at the joint, oil and coolant chemistry slowly attack the materials, and over-tightened or unevenly torqued fasteners crush one side while leaving the other loose. Off-road machines add water crossings, mud and long idle periods in the heat. Eventually even a good gasket loses its ability to rebound and seal. Replacing gaskets during any service that disturbs a joint, and choosing a premium material like Cometic’s, is the most reliable way to keep an engine dry and making full power.

Signs You Need This Gasket

• Full engine rebuilds
• Multiple leaks across the engine
• High-hour engines due for a refresh

Installation Tips

1. Lay out and identify every gasket before disassembly.
2. Clean all sealing surfaces.
3. Install the gaskets dry unless the instructions call for sealant.
4. Torque every fastener to spec in sequence.

Always follow the torque values and tightening sequence in your factory service manual. Replace any stretched or damaged fasteners, and never reuse crush washers or O-rings.

Who This Gasket Is For

• Trail, mud and dune machines that see hard use
• Racing and big-bore performance builds
• Rebuilding high-hour work and utility machines
• Restoring older ATVs to like-new condition

Complete the Job

Doing the job right? These parts share an application with this gasket. Check them against your model:

• Polaris Top End Gasket Kit 95 mm (C3039)

More Cometic gaskets for Polaris:

• Honda - Yamaha - Arctic Cat - Exhaust Gasket (EX657)
• Polaris Exhaust Gasket (EX038042AM)

Browse every Cometic part in our Cometic Gasket collection. For bolts that need it, see our Loctite thread lockers.

Helpful Guides From the Witchdoctors Blog

• ATV/UTV Engine Crankcase Buyer’s Guide: Structural Integrity Over Cutting Corners
• Low ATV/UTV Compression? How to Check Engine Cylinders & Power Loss
• Expert Installation Guide: Stop UTV Gasket Leaks- Install them Correctly

Frequently Asked Questions

Is this top and bottom end?

Yes, a complete kit covers the top end and the bottom end gaskets.

Do I need gasket sealer?

In most cases, no. Cometic gaskets are designed to install dry. Use sealer only where your service manual specifies it, such as at case parting lines.

Can I reuse my old gasket?

No. Gaskets compress and take a set when they are torqued. A new gasket is cheap insurance against leaks and a second teardown.

Is Cometic better than OEM?

Cometic engineers its gaskets to meet or exceed OEM sealing performance and offers performance options, such as MLS head gaskets and multiple bore and thickness choices, that the OEM does not.

Where are Cometic gaskets made?

Cometic gaskets are manufactured in the USA.

Where to Ride

Once your engine is sealed up and broken in, take it somewhere worth the effort:

• St. Anthony Sand Dunes (St. Anthony, Idaho): 10,600 acres of dunes
• Anthracite Outdoor Adventure Area (AOAA) (Shamokin, Pennsylvania): about 200 miles of trails in former coal country

Order Your Cometic Polaris Complete Gasket Kit Today

Seal it right the first time. Add the Cometic Polaris Complete Gasket Kit (C3826) to your cart, and Witchdoctors will ship genuine Cometic gaskets fast. Questions about fitment? Contact our team with your year, make and model, and we’ll help you get the right part.

Shipping

Qualifying Retail orders $159.99 or more will receive free ground shipping. Free Shipping Terms and conditions.

All orders over $500 will require a signature.

Please see International Shipping page for orders shipping outside the US.

See our full Shipping Policy page for further details.

Product Availability

We show real time product availability. These products normally ship the same business day but may ship from one of our warehouses across the country. If an item requires additional processing time you will be notified.

Returns

If your order arrives and it is not right, we will we'll fix it. We promise!

Doesn't fit or just not happy with it? You can return any new, unopened, unused or unaltered item within 30 business days of delivery receipt of your item. We will issue a refund to your original payment method.

See our full Return Policy for all of the pertinent details.